Well, if it is, then I've been having this dream for an awfully long time! Unless I only dreamed that it's been that long? But wait a second, if this is your dream, I guess you're the one who's been dreaming it, so it doesn't really matter how long I've been here or not!

[ Seriously pondering this now. It's deep stuff, man. ]

But if it's a dream, I don't think it's a nightmare! Like I said, it's really nice here! I bet you're going to get along just fine!